多级多孔节流调节阀的声学特性研究  

Research on acoustic characteristics of multi-stage multi-orifice throttle regulating valve

作　　者：肖龙洲 张政[1] 蔡标华[1] 方超[1] 俞健[1] XIAO Longzhou;ZHANG Zheng;CAI Biaohua;FANG Chao;YU Jian(Wuhan Second Ship Design and Research Institute,Wuhan 430064,China)

机构地区：[1]武汉第二船舶设计研究所,武汉430064

出　　处：《流体机械》2023年第12期23-28,80,共7页Fluid Machinery

基　　金：国家自然科学基金项目(11472197)。

摘　　要：针对目前调节阀节流过程中振动与噪声较大等问题,采用多级节流和多孔节流相结合的方法设计多级多孔节流调节阀,并通过试验对多级多孔节流调节阀与典型球阀的水力特性和声学特性进行对比研究。结果表明,多级多孔节流调节阀的流量系数Kv和开度之间的变化规律接近线性;多级节流与多孔节流能够显著降低阀门的振动与噪声;多级多孔节流调节阀径向振动频谱图在35~40 Hz和115~120 Hz频带处不存在典型球阀径向振动频谱图中的峰值;多级多孔节流调节阀更适用于管道系统的流量调节,多级节流与多孔节流使得多级多孔节流调节阀的声学特性明显优于典型球阀。多孔节流与多级节流相结合的方法为阀门的减振降噪提供了新的思路。For the problem of big vibration and noise on the regulating valve at present in the throttling process,the method of combining multi-stage throttling and multi-orifice throttling was used to design a new type multi-stage multi-orifice throttle regulating valve(MCV).The hydraulic and acoustic characteristics of TBV(a traditional ball valve)and MCV were compared by experiments.The results show that the change law between the flow coefficient Kv and opening of MCV is close to a linear relationship.The adoption of multi-stage throttling and multi-orifice throttling can significantly reduce the vibration and noise induced by the valve body.There are no peaks in the radial vibration spectrogram of MCV in the 35~40 Hz and 115~120 Hz frequency bands,which appears in radial vibration spectrogram of TBV.Thus MCV is more suitable for the flow regulation of piping systems.Multi-stage throttling and multi-orifice throttling makes the acoustic characteristics of MCV obviously better than TBV.The method of combining the multi-stage throttling and multi-orifice throttling provides a new idea for vibration and noise reduction of valves.

关 键 词：多孔节流 多级节流 声学特性 水力特性 振动与噪声 

分 类 号：TB535[理学—物理]